Hoisting-bucket.



4 (No Model.)

Patented Apr. 29, I902.

A. E. NORRIS & J. ROUGHAN.

HDISTING BUCKET.

, (Application filed Nov. 2, 1900.

3 Sheets$heet I.

- JEcmwRoz/o haw, fywh w No. 699,000. Patented Apr. 29, I902. A. E. nonms & .1. ROUGHAN.

HOISTING BUCKET.

lication filed Nov. 2, 1900.1

\ 3 Sheets-Sheet 2.

Patented Apr. 29; I902.

3 Sheets-Sheet 3.

A. E; NORRIS & J. ROUGHAN.

HDISTING BUCKET.

(Application filed Nov. 2, 1900.)

(No Model.)

TNE ndmm mun no. Mme-1.1m. wmmm. u A:v

UNITED STATES PATENT CEEICE. I

ALMON E. NORRIS, OF CAMBRlDGE ANl) JAMES ROUGHAN, OF BOSTON, MAS- SACHUSETTS, ASSIGNORS TO RAVVSON & MORRISON MANUFACTURING COMPANY, OF CAMBRIDGE, MASSACHUSETTS.

HOlSTlNG-BUCKET;

SPECIFICATION forming part of Letters Patent No. 699,000, dated April 29, 1902.

Application filed November 2, 1900. Serial No. 35,245- (No model.) I

To aZZ whom it may concern:

Be it known that we, ALMON E. NORRIS, a resident of Cambridge, county of Middlesex, and JAMES ROUGHAN, a resident of Boston,

county of Suffolk, State of Massachusetts, citizens of the United States, have invented an Improvement in Hoisting Buckets, of which the following description in connection with the accompanying drawings, is a specifi- IO cation,like numerals on the drawings representing like parts.

This invention relates to hoisting-buckets, and especially to buckets of the type familiarly known as clam-shell buckets, the object of the invention being chiefly to improve the general structure of such buckets, as more fully pointed out hereinafter. I These clamshell buckets are commonly used in dredging or unloading coal, &;c., and in such use they are often subjected to very great-strain, and in lowering buckets into the hold of a vessel, for instance, any projecting parts on said bucket are very easily broken 0E, rendering the said bucket unfit for further use until re- 2 5 paired.

In our improved bucket, hereinafter described, we have so modified the construction of certain of the parts that many of the parts which normally project somewhat are provided with suitable protecting abutments, the

result being that such projecting parts are protected from injury, and thus the life of the bucket is materially lengthened. We-

have also modified somewhat theshape of the bucket-segments and improved generally the entire structure, as hereinafter pointed out in the claims.

In the accompanying drawings, which show one embodiment of our invention, Figure 1 is 49 a side elevation of a hoisting-bucket with our improvements added thereto. Fig. 2 is a plan view of Fig. 1-. Fig. 3 is an end View. 1 Figs.

4. and 5 are details showing the improvements we have made in the head of the bucket. Fig.

6 is a. detail showinga modified form of bucket. Fig. 7 is a partial plan View showing the detachable wear-plate. Fig. 8 shows a detail of the weight. Figs. 9 and 10 are diagrammatic Views showing the shape of the bucket-segments atdifferent portions thereof, Fig. 9 beinga diagrammatic front elevation of a bucket-segment and Fig. 10, being a diae grammatic representation of a section at approximately the line y ,Fig. 1; Fig. 11 is a detail of the end of the arms of the bucketsegments. Fig. 12 is a detail of the leader and guide-eye. Fig. 13 is a section through jaws of bucket. v

The bucket represented in the drawings comprises the two bucket-segments 3 4, the said segments having attached in any suitable 7 way to the upper part of their side pieces the arms 5 6, the inner ends of which arms have the upwardly-disposed offset portions 7 8, which are provided at their ends with openings to receive the pivot-shaft 9, by means of which the bucket-segments are pivoted together. The object in thus providing the arms with the upwardly-disposed offset portions is to provide means whereby the pivotal 7o connection between the bucket-segments may be located some distance above the segments and whereby the bucket-segments when open have a farther reach, and can therefore pick up a greater quantity of material when they are closed. By means of this construction the closing means for the bucket are elevated above the bucket, and are therefore less liable to get clogged. As seen in Fig. 11, each of the openings in the oifset portions 7 and 8 8c of the arms 5 and 6 is provided with a suitable bushing 61, which is preferably of steel, and which has for its object to take the wear between the pivot-shaft 9 and the arms 5 and v 6. This bushing is preferably retained in place by means of the beveled flanges 62 63,

which set in suitable counterbores at the end of the opening, whereby the bushing comes flush with the sides of the arms. In making the bushing 61 the flange 62 is made as shown, while the flange 63 is made with the shape shown in dotted lines. After the bushing has been put inplace the said flange 63 is hammered back to fill the counterb'ore, as shown in full lines. The end of the pivot- 5 shaft 9 has any suitable nuts on the end thereof, which hold the shaft in place.

' The bucket-head 10l1as pivotally connected thereto in any usual way the links 11, which links are in turn pivotally connected to the bucket-segments, as is common in this class of device, the said head carrying eyes 12 or other suitable means, to which the holding chain or rope is attached, and having suitable means for attaching the end of the opening and closing chain or rope. The opening and closing chain is represented by 13, and it passes through an oifset guide-eye 14, attached to the head 10, and passes around sheaves supported upon the pivot-shaft 9 and upon the pivotpin 15, which is journaled in the head 10, one end of the chain being attached to the head in a manner hereinafter described.

Heretofore in this class of devices it has been customary to provide one end of the pivot-pin 15, which projects beyond the head, with a loosely-mounted arm, to which the end of the opening and closing chain was attached. This arm, however, being on the outside of the head was liable to become broken off, and to prevent this we have made the said arm, to which the end of the hoisting-chain is attached, integral with the head, the head and arm, preferably, being made of cast-steel, and have so positioned the arm with relation to the head that the arm is situated in substantially the plane of one side of the head and does not project materially beyond the said head. This arm is illustrated at 16, and, as shown in Fig. 5, it is situated in the plane of the side of the head, the said arm being disposed at an inclination to a vertical line drawn through the head, as best seen in Fig. 4, whereby as the bucket is closed, as shown in Fig. 1, the arm has the same general direction as the opening and closing chain, which is attached to it. It will be noted that the arm 16 extends radially from the axial line of the sheaves supported upon the pivot -pin 15, and in practice the said arm is given such an inclination as to be substantially in line with that portion of the opening and closing chain which is attached thereto. The line or direction of the strain on the opening and closing chain therefore is in the direction of the length of the arm and passes through the axial line of the sheaves supported in the heads, whereby this tension or strain on the chain serves to steady the head and hold it in a vertical position, as will be obvious. With the common construction above alluded to the strain on the chain would not have this effect because the arm is free to rotate on the pivotpin 15.

The sheaves supported on the pivot-pin 15 and around which the opening and closing chain passes are designated by 17, and in order to lubricate the same we have provided the pivot-pin with the central bore 18, (shown in dotted lines in Fig. 5,) the said here communicating with the exterior of the pin by the oil-duets 19.

Heretofore it has been the common practice to supply oil to the ducts 19 through the end of the bore 18 by removing a plug which is screwed into the end of said bore; but this has necessitated turning the head down on one side in order to present the bore 18 in a vertical position for the reception of oil. If an oil-cup were attached to the end of the said pin to conduct the lubricant tothe bore 18, the severe usage to which the buckets are subjected is extremely liable to break such oil-cup off.

In order to provide an oilcup whereby a quantity of lubricant can be fed to the ducts 19 without tipping the head down on its side and in order to protect said oil-cup from injury, we place the same on the upper side of the pin, as shown in Figs. 4 and 5, wherein the oil-cup is designated by 20 and is shown tapped into the upper side of the end of the pin. On either side of the laterally-disposed oil-cup 20 the head is provided with suitable lugs or projecting abutments 22, these lugs, as will be obvious, serving to protect the oilcup from injury. The usual plug 21 is screwed into the end of the central bore 18 to prevent the oil from escaping. The opposite end of the pin 15 projects through the opposite side of the head and has the usual cotter-pin 23 therein to prevent the removal of the said pin, and in order to protect both the end of the pivot pin 15 and the cotterpin 23 from injury we have provided the adjacent side of the head with suitable lugs 24, between which the end of the pivot-pin 15 and the cotter-pin 23 are confined. As usual in this class of devices, the head has integral therewith the transverse guide eye 14, through which the opening and closing chain passes and by which it is guided, and commonly the said guide-eye has an interior contour corresponding to the contour of the chain. In the constant use of the bucket the chain rapidly wears the guide-eye, and when the same has become too worn for further use the whole head 10 is rendered useless.

In our improved bucket we provide the guide-eye 14 with acircular aperture,as illustrated in Fig. 7, and attach to the upper portion of said guide-eye a detachable wear-plate or leader 26, the said leader having an opening of the proper shape to fit the chain, as best seenin Fig. 7, and preferably being made in one piece. As illustrated in Fig. 12, we preferably make our leader with the boss on its under side, which boss sets into the end of the opening 66 through said guide-eye, this construction serving to center the leader properly in the eye.

The leader 26 is shown as being held in place by means of bolts 67, the heads of which are set into recesses 68 in the upper side of the leader, this construction serving to protect the said bolts from injury. The peculiar shape of the opening through the leader 26 serves to prevent the opening and closing chain which passes therethrough from twisting, whereby it is led to the sheaves on the pivot-shaft 9 in the proper position to run freely thereover. YVith this construction it IOC willbe evident that the wear of the chain comes entirelyupon'the wear-plate or leader, and when this becomes-worn out a fresh leader may be supplied without the necessity of discarding the entire head.

While we have illustrated the guide-eye 14 ,as centrally disposed relative to the head 10, we may, if desired, offset the same somewhat,

so that the aperture therein will be approximately vertically over that sheave 72 which the opening and closing chain first-passes under, such a construction permitting the chain'to run with less binding.

In order to strengthen the bucket-segments 3 4 and prevent the sides of the same from spreading apart, we provide the said segments such that the said lugs 33 do not project beyond the outer surface of the tie member 29 or the bucket-segments, the space between the lug 33and the shoulder 34 containing the nutof the bolt 35,. which serves to pivotally connect thelink and-the lug. As shown in Fig- 1, the lower endof each link is provided with an eye 70, through which the pivot-bolt 35 is passed, the said eye being offsetsomewhat, so that the center of the aperture is at one side of the longitudinal axis of the link.

The object'of said construction is to bring the pivotal point of the bucket-segment with the link in from the longitudinal axis of the link,

so that nopart of the bucket-segment will project beyond the link, and the :eye will present a rounded surface which isisubstarb tially in line with the outside of the said link.

The bucket-segments are made of peculiar shape, as seen inlFigs. 9 and 10, which are sections of the segments at two different points Fig. 9 shows the shape of the-seg-' ments near the jaws, audFig. 10 shows the shape near'the outer portions of the segments. At the inneror jawend of the bucket-segments the side walls have thevertical portions 92 ,and :the bottom has the'straight portion 93, andtheportions 92.and 93 are connected by the curved portion 94. This shape for thejaw end of bucket-segments makes the straight portion 93 of. the bottom of less length than where the segment is rectangular in shape, and. therefore .stiifens and strengthens the jaw. Ithasbeen foundin practice that the long straight portion 93. of the rectangular-shaped segment is very liable .to bend or buckle, while a jaw of the shape shown in Fig. 9 will Withstand amuch greater strain without buckling. This form of jaw also facilitates the entrance of the material to be handled intothe bucket-segment.

It is, however, essential that the bucket should have as great a capacityv as. possible, and we have thereforemade the'curved portion 94 of the segments with a decreasing radius toward the outer upper corner 9570f the segment, so that a section on the lineyy discloses a shape such as seen in Fig. 10,

wherein the curved portions-94 have a minimum radius and the bucket-segment is substantially rectangular in: shape. The inner ends of the segments have the thickened jaws 100attached thereto, (see Fig. 13,).the said jaws being preferably beveled at their cutting edges, as shown at 101. Each jaw has the recess 102 on its back edge and preferably on the inner face, which recess is of the same depth as the thickness of the shell of the se ments and in which recess the inner edge of said shell rests, the shell and jawsbeingsecured together in any suitableway, as by riveting. With this construction the inner face of the jaw comesrflush with the-inner face of the shell of the segment and the jaws are on the outside of the segments. Preferably we extend the jaws clear around'the segments, as seen inFig; 1, and the upper ends of said jaws overlap and'are riveted or otherwise fastened to the ofiset portions 7 and 8 of the arms 5 and 6. (See Fig. 1.)

The pivot-shaft 9,: by means .of' which the bucket-segments are pivoted together,-:has

sleeved thereon a suitable weight 37, the said weight being for the purpose of assisting the bucket-segments to open-whenthe opening and closing chain is slackened. The

weight is made heavy-enoughto overhaul the chain 13 rapidly, so that whenthe head 10 is held stationary by the holding-rope and the opening and closing rope is slackenedxthe weight carriesthe'pivot-shaft 9 down quickly,

thereby opening the bucket-segmentsr. The weight 37 ,which preferably extends the entire inside width of the bucket, has'centrallyofits length'the vertical slot. 71 to provide a suit- IIO able space for the sheaves 72, around which. thechain 13 passes, the upper portion ofsaid slot being shaped to receive the sheaves 72 and-to form aguide for the chain 13,'as shown at 73in Fig. 8, whichzshows a sufficient'portion of said weight to illustrate itsconstruction. In order to' insure .that said weight shall always hang vertically disposed, as shown in Figs..3-and 8, the.bore 74,'through which the shaft9passes, isnear the upper portion of said weight,;whereby-the bulk'of the mass,and consequently the center of gravity ofsaid weight, is some distance below the shaft 9, such dispositionof=the weight preventing the weight from turning with the As shown in Fig. 8, eachend of thesheaves. weight 37 has the set-screw 17 which serves to lock the shaft9 and weight together, the sheaves 72 of course turning on said shaft;

To oil the sheaves, suitable oil-chambers 76 are provided in the weight, one-ateach side of .the pulleys 72, and to conduct the oil to the sheaves 72 the shaft 9 preferably has grooves in its upper side which connect the said oil-chambers. Suitable plugs or caps 80 may be used to close the upper ends of the oil-chambers, if desired.

As illustrated, the upper portion of the weight 37 is provided with enlarged bosses 39, adjacentthesheave-opening71,and preferably the oil-chambers 76 will be contained within said bosses,thus furnishing a greater depth forsaid oil-chambers whereby a larger quantity of lubricant may be fed to the device at one operation,so that less attention is required so far as lubrication is concerned. The said enlarged bosses being preferably of about the size of the sheaves 7 2 serve to protect the same and also to strengthen the weight at the place where the oil-chambers are positioned.

If desired, the bucket-segments 3 4 may be constructed with overlapping lips, as illustrated in Fig. 6, the advantage of this structure being that when the bucket is shut there is no break or space between the lips through which the material may fall out.

From the foregoing it will be observed that our improved bucket presents no projecting portions which are liable to be broken off during the use of the bucket, all the exposed parts being protected by some suitable projecting lugs or abutments.

While we have herein illustrated and described one form in which our invention may be embodied, yet we desire to state that the invention is not limited in all particulars to the precise construction illustrated, as the details of structure may be varied without departing in any way from the invention as expressed in the appended claims.

Having fully described our invention, what we claim as new, and desire to secure by Letters Patent, is-- 1. In a hoisting-bucket, two bucket-segments, a plurality of sheaves carried thereby, a head carrying one or more sheaves, an opening and closing chain passing about said sheaves, and an arm rigid with the head and to which the end of the said chain is attached, said arm extending radially from the axial line of the sheaves in the head and being substantially in alinement with that portion of the chain connected thereto.

2. In a hoisting-bucket, a head carrying one or more sheaves, an opening and closing chain passing about said sheaves and an arm rigid with the head and to which the end of the opening and closing chain is attached, said arm extending radially from the axial line of the sheaves and being substantially in alinement with that portion of the chain connected thereto.

3. In a hoisting-bucket, two bucket-segments, a series of sheaves carried thereby, a head having an arm rigidly secured thereto, and an opening and closing chain passing around the sheaves on the bucket-segments and having the end thereof secured to the said arm, said arm being in line with that portion of the chain connected thereto and substantially vertically over the last sheave of the series.

4. In a hoisting-bucket, a head having an arm integral therewith and projecting therefrom to which the end of the opening and closing chain is attached, said arm being situated in the plane of the side of the head and being inclined to the vertical whereby the pull upon the opening and closing chain is in the direction of the length of the arm, and serves to maintain the head in a vertical position.

5. A hoisting-bucketcomprising two bucketsegments, a head, connections between the head and segments, and an opening and closing chain, said head having a laterally-extended. guide-eye provided with a chain-receiving opening and a leader, detachably secured to said guide-eye, said leader having an aperture to fit the chain.

6. Ahoisting-bucket comprising two'bucketsegments, a head, connections between the head and segments, and an opening and closing chain, said head having rigid therewith an oifset guide-eye through which the said chain passes, a leader surrounding the chain and detachably secured to the guide-eye, and a downwardly-extended arm to which one end of said chain is secured, said arm also being rigid with the head and being in the plane of the end thereof.

7. Ahoisting-bucket com prisingtwobucketsegments pivotally connected together, a head,links connecting the head and segments, and an opening and closing chain, said head having an offset guide-eye provided with a detachable leader through which the said chain passes, and an integral downwardlyextended arm to which one end of the chain is attached, said arm being inclined to the vertical whereby the pull on the chain serves to maintain said head in a vertical position.

8. In a hoisting-bucket, a head having an offset guide-eye adapted to receive the opening and closing chain, and a one-piece leader surrounding the chain and detachably secured to said guide-eye, said leader serving to protect the guide-eye from Wear.

9. In a hoisting-bucket, a head having an offset guide-eye, provided with an aperture adapted to receive the opening and closing chain, said aperture being larger than said chain, and a detachable leader attached to the guide-eye and having an aperture adapted to fit the chain, whereby the leader prevents the chain from twisting and protects the guideeye from wear.

10. A hoisting-bucket comprising two pivotally-inounted bucket-segments, a head, links pivotally connecting said head and bucketsegments, and an opening and closing chain, sheaves carried by said head and over which said chain passes, a pin supporting said sheaves and projecting at its ends beyond the end faces of said head, and projecting lugs on said head which partially inclose said projecting ends of the pin, whereby the said pin ends are protected from injury from blows. I

11. In a hoisting-bucket, a head for supporting the sheaves over which the opening and closing chain runs, a pivot-pin on which saidvsheaves turn, said pivot-pin having an oil-cup at one end, and means to convey the oil to the portion on which the sheaves bear, and said head having projecting lugs situated at either side of said oil-cup, whereby said oil-cup is protected against injury.

7 12. In a hoisting-bucket, a head for. supporting the sheaves over which the opening and closing chain runs, a pivot-pin on which said sheaves turn, said pivot-pin having a laterally-disposed oil-cup at one end, and means to convey the oil to the portion. on which the sheaves bear, said head having projecting lugs situated at either side of said oilcup, whereby said oil-cup is-protected against injury. V V

13. In a hoisting-bucket, two bucket-segments pivoted together, a head and links connecting the head and bucket-segments, each segment comprising a bottom and two side pieces, and a tie member, said tie member havingan.inwardly-disposed oiiset portion at each end, a lugprojecting from said offset to which the link is pivoted, and arms for securing said tie member to the side pieces, the lug on the offset portion coming substantially flush with the outside edge of said tie member, whereby the pivoted connections of said lngsand links do not project outside of the bucket-segments.

14:. In a hoisting-bucket, two bucket-segments, a rod or shaft on which said segments are pivotally mounted, a head, links connecting said head and bucket-segments, sheaves carried by said shaft, an opening and closing chain connected to said head and passing around said sheaves, and a weight sleevedon saidrod,said weight having a cut-away portion in which said sheaves operate, and enlarged bosses at either side ofsaid cut-away portion, said bosses being, approximately the size of the sheaves. I V

1 5..In a hoisting-bucket, two bucket seg ments, a'rod or shaft on which said segments are pivotally mounted, a head, links connect ing said head and bucket-segments, sheaves carriedby said shaft, an opening and closing chain connected to said head and passing around said sheaves, and a weight sleeved on said rod, said weight having a cut-away por tionin which saidLsheaVes operate, and enlarged bosses at'either-side of'saidcut-away portion, said bosses being approximately the size of the sheaves, and oil chambers'or pas sages contained in said'bo'sses.

16. Ina hoisting-bucket, two bu'cket-.seg{

ments, arm's secured to the upper portions of said segments and having at their inner ends upwardlyrdisposed offsets, a pivot-shaft extending throughsaid offset ends of the arms whereby the two bucket-segments are pivot ally connected. together, sheaves supported on said shaft, a headhaving an ofiset guideeye, an opening and closing chain connected to said head and passing through the eye andover said sheaves, and a leaderdetachably secured to the said eye',-said-leadervhaving an aperture to fit the chain. 1

17 In a hoisting-bucket, two pivotally-connected bucket-segments having overlapping lips, a head, links pivotally connecting the head ,with the bucketsegments a hoistingchain' connected to the head' and. passing around the pivotal point between the bucketsegments, the said head having a laterally- I disposed guide-eye through which the chain passes, and a leader surrounding said chain anddetachably securedto said guide-eye, said leader having an aperture to fit the chain.

18. In a hoistingebuckefitwo bucket-segments, arms connectedtoftheuppersides of each segment and having'upwardly disposed portions, the arms of one segin'entbeing pivo, otally connected to the arms of the other segment, and each segmentlhaving a jaw running completely aroundthe inner edge1.the'reof, the ends of said jaws overlappingand be- I ing secured to the upwardly disposed'portions of said arm. 4 v i 19. A bucket-segment, havingits sides and bottomconnected by a curvedportion of progressively-increased radius fromthe back of the segmentto the'mouth thereof.

20. A'bucket-segme'nt having its sides and bottom connectedby a curved portionof progressively-increased radius from'the backfof the segment tothe mouth thereof, and. having a thickened jaw running completely around the mouth on the outside of its shell.

21. Abucket segment having arms connected to the upper sides thereof, each arm having an upwardly-disposed"portionpro videdwith a bushed aperture, for connecting said segment to a pivot-shaft, the said seg-. ment having a thickenedbeveled jaw extending completelyaround themouth thereof and on the outside of its shell,. the sides an'd bot tom segments of 'saidibucketbeing connected II 5 by a curved portion ofprogressively increased radius from the backIof thefsgme'ntto'the mouth thereof. a x In testimony. whereof 'weha've signed our names to this-specification in thepresence' of no two subscribing witnesses.

ALMoN'. ,No RIs."

JAMES 'ROIIGIIAN.

,Witnesses:

A GEO. W. GREGORY, Louis 0. SMIIH. 

